【摘要】 应用钢材和混凝土应力 -应变关系滞回模型 ,采用数值方法计算方钢管混凝土构件的弯矩-曲率滞回关系 ,通过对大量计算结果的分析 ,研究构件在往复荷载作用下的工作机理 ,并给出构件弯矩 -曲率关系的恢复力模型及模型中各参数的简化计算公式 ,可为进一步进行方钢管混凝土结构体系的弹塑性分析提供参考。更多还原

【Abstract】 Using the stress strain hysteretic models of the steel and concrete, a numerical analysis method is applied to analyze the moment curvature hysteretic behavior of concrete filled square steel tubes.After analyzing lots of the calculating results,a working mechanism of the member subjected to cycle loading is illuminated.Finally,the restoring force model of moment curvature curve is presented and the corresponding simplified formulae of the parameters in the model are proposed as well,they may be referred for elasto plastic analysis of structural system of the concrete filled square steel tubes.更多还原